Module: RecursiveTreeScopes::ModelMixin

Defined in:
lib/activerecord-recursive_tree_scopes.rb

Instance Method Summary collapse

Instance Method Details

#has_ancestors(ancestors_name = :ancestors, options = {}) ⇒ Object 



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# File 'lib/activerecord-recursive_tree_scopes.rb', line 3

def has_ancestors(ancestors_name = :ancestors, options = {})
  options[:key] ||= :parent_id

  scope ancestors_name, lambda{ |record|
    RecursiveTreeScopes::Scopes.ancestors_for(record, options[:key])
  }

  class_eval <<-EOF
    def #{ancestors_name}
      self.class.#{ancestors_name}(self)
    end
  EOF
end

#has_descendants(descendants_name = :descendants, options = {}) ⇒ Object 



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# File 'lib/activerecord-recursive_tree_scopes.rb', line 17

def has_descendants(descendants_name = :descendants, options = {})
  options[:key] ||= :parent_id

  scope descendants_name, lambda{ |record|
    RecursiveTreeScopes::Scopes.descendants_for(record, options[:key])
  }

  class_eval <<-EOF
    def #{descendants_name}
      self.class.#{descendants_name}(self)
    end
  EOF
end